Alkyds from red silk-cotton (Bombax ceiba) seed oil and investigation on their microbial degradation

•Red silk-cotton seed oil-based alkyds were synthesized via alcoholysis-polyesterification method.•Being a non-drying oil, the alkyd shows performance for surface coating applications.•The alkyd possesses good biodegradability. The vegetable oils are being increasingly used for the synthesis of seve...

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Bibliographic Details
Published in:Progress in organic coatings 2018-11, Vol.124, p.71-79
Main Authors: Bora, Montu Moni, Deka, Chayanika, Ahmed Tapadar, Sufian, Jha, Dhruva Kumar, Kakati, Dilip Kumar
Format: Article
Language:English
Subjects:
Adhesion tests
Alcoholysis-polyesterification
Alkyd
Bacteria
Bombax ceiba
Chemical properties
Chemical synthesis
Cotton
Degradation
Fourier transforms
Gloss
Iodine
Magnetic properties
Microbial degradation
Microorganisms
NMR
Nuclear magnetic resonance
Organic chemistry
Pseudomonas aeruginosa
Red silk-cotton seed oil
Silk
Thermal resistance
Thermal stability
Vegetable oils
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Summary:•Red silk-cotton seed oil-based alkyds were synthesized via alcoholysis-polyesterification method.•Being a non-drying oil, the alkyd shows performance for surface coating applications.•The alkyd possesses good biodegradability. The vegetable oils are being increasingly used for the synthesis of several types of polymers. In the present study red silk-cotton (Bombax ceiba) seed oil was used to synthesize alkyds which were characterized by Fourier transform infrared (FT-IR) and 1H nuclear magnetic resonance (NMR) spectroscopic studies. The physico-chemical properties such as colour, acid value, free fatty acid content and iodine value of the alkyds were evaluated. The coating performance of the cured films was tested by measuring chemical resistance, thermal stability, pencil hardness, gloss and adhesion. Subsequently microbial degradation studies of the alkyds were done using Pseudomonas aeruginosa (MTCC1934) and Bacillus subtilis (MTCC1305) strains and the results indicated substantial degradation in each case.
ISSN:0300-9440
1873-331X
DOI:10.1016/j.porgcoat.2018.08.008